fix(widgets): keep checkin colored look when signed per reference

Drop the gray is-done/disabled overrides on the header checkin chip
(light and dark); the reference keeps the same colored badge after
signing. Card badge itself already renders white on the jb-yellow
gradient (verified in browser with the full stylesheet chain).

assets/css/frontend/header-userbox.css

@@ -326,19 +326,14 @@
   color: #8a5a00 !important;
 }
 
+/* 已签到态对齐参考主题：保留原配色（参考主题签到后仍为同一彩色按钮），
+ * 仅禁用指针交互；此前的灰底灰字覆盖是与参考主题的偏差。 */
 .aksrt-header-checkin.is-done,
 .aksrt-header-checkin:disabled,
 .aksrt-header-checkin.is-done:hover,
 .aksrt-header-checkin:disabled:hover {
   cursor: default;
   opacity: .85;
-  background: #f3f4f6 !important;
-  color: #555 !important;
-}
-
-.aksrt-header-checkin.is-done > i,
-.aksrt-header-checkin:disabled > i {
-  color: #777 !important;
 }
 
 .aksrt-header-payvip__cta,
@@ -467,12 +462,6 @@ body.dark-theme .aksrt-header-checkin > i {
   color: #f0c14b !important;
 }
 
-body.dark-theme .aksrt-header-checkin.is-done,
-body.dark-theme .aksrt-header-checkin:disabled {
-  background: rgba(255, 255, 255, .08) !important;
-  color: #bbb !important;
-}
-
 body.dark-theme .aksrt-header-wallet {
   background: rgba(255, 255, 255, .06);
 }